Rolling-mill



H. A. ROEMER.

ROLLING MILL.

APPLICATION FILED APR. 16. 1920.

Patented Mar. 8, 1921.

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H. A. ROEMER.

ROLLING MILL.

APPLICATION FILED APR. 16, I920- 1,370,9 98, Patented Mar. 8, 1921.

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H. A. ROEMER.

ROLLING MILL.

APPLICATION FILED APR. 16. 1920.

Patented Mar. 8,1921.

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HENRY A. ROEMER, OF CANTON, OHIO.

ROLLING-MILL.

Specification of Letters ."Patent.

Patented Mar. 8, 1921.

Application filed April 16, 1920. Serial No. 374,284.

To all whom it may concern:

Be it known that I, HENRY A. RonMnR,'a citizen of the United States,residing at Canton, in the county of Stark and State of Ohio, haveinvented a new and useful Rolling-Mill, of which the following is aspeci: fication.

This invention relates to rolling mills and more particularly to thedriving mechanism for balance roughing mills such as are used forroughing or rolling sheets, bars, plates or slabs in sheet, tin, jobbingand plate mills.

The objects of the invention are the provision of a driving mechanismfor driving the upper roll of a balance roughing mill from the lowerroll, regardless of the distance apart the rolls may be.

The above and ancillary objects are attained by providing a fixed gearupon the end of the lower roll shaft arranged to mesh at all times withan idle gear, said idle gear meshing with a second idle gear, both ofwhich are mounted upon fixed bearings upon the mill housing, the secondidle gear meshing with a gear which is frictionally mounted upon the endof the upper roll shaft, the center of the upper roll being below thecenter of the second idle gear when the roll is in its lowered position,and above the center ofsaid idle gear when the roll is in its raisedposition, said frictionally mounted gear at all times meshing with saidsecond idle gear.

With these objects. in view the invention consists in the novelconstruction and arrangement of parts, herein after described,illustrated in the accompanying drawings, and particularly pointed outin the appended claims, it being understood that various changes in theform, proportions, size and "minor details of construction may be madewithin the scope of the appended claims, without departing from thespirit or menficing any of the advantages of the in vention.

The invention thus set forth in general terms is illustrated in theaccompanying drawings, forming part hereof, in which:

Figure 1 represents a side elevation of a rolling mill embodying theinvention.

Fig. 2 is a front elevation thereof. Fig. 3 is a fragmentary s deelevation, partly in section of an end portion of the'upper roll shaftshowing the gear rrictionally mounted thereon; and

Fig. 4 is an end view thereof.

A practical embodiment of the invention is disclosed in the accompanyingdrawings, forming a part of this specification in which similar numeralsof reference indicate corresponding parts throughout the several views.

Referring to the drawings the housing of a mill of any usual and wellknown construction is indicated generally by the numeral 1. The lowerroll 2 is provided with the usual shaft 3, which is journaled in asuitable permanent bearing provided in the housing and the shaft 4 ofthe upper roll 5 is journaled in a suitable sliding bearing 6 mounted inguides 7 provided upon the housing and arranged to be raised or loweredin the usual manner by means of screws 8, or other well known means ordevices used in balance mills.

A gear 9 is fixedly mounted upon the shaft of the lower roll 2 upon theoutside of the housing. A bracket 10 is fixedly attached to the housingat one side of the roll shafts 3 and 4 and is provided with bearings 11and 12 within which are journaled the shafts 13 and 14 of the lower andupper gears 15 and 16 respectively, said gears meshing with each other,the lower gear 15 meshing at all times with the gear 9 upon the lowerroll. The neck of the upper roll is provided with a conical or taperedportion 17 upon which is mounted the internally coned ring 18 providedaround its periphery with the gear teeth 19, said teeth meshing at all,times with the gear wheel 16. A disk 20, provided with a centralaperture, shaped to receive the end of the upper roll shaft 4, isslidably mounted upon said upper roll shaft and normally holds the conedring 18 in frictional engagement with the coned or tapered portion 17 ofthe neck. Pins 21 are fixed in the outer extremity of the conicalportion 17 of the neck and extend outwardly to the end of the shaft 4, adisk 22 similar to the disk 20 being slidably mounted upon the endportion of the shaft'4 and upon said pins, nuts 23 being provided uponthe screw threaded extremities 24. of said pins to prevent outwardmovement of the disk 22, coil springs 25 being interposed between thedisks 20 and 22 to normally urge the disk 20 inwardly against the conedring 18 and hold the same in frictional engagement with the conedportion 17 of the neck.

Each of the pins 21 is squared for a portion of its length as shown at21 and the apertures in the disk 20 are similarly squared to receive thesquared portions of the pins and lock them against movement after thedisk is placed in position thereon, thus preventing the pins frombecoming accidentally loosened owing to the jarring of the mill.

It will of course be understood that frictional adjustment of thegearing 18 is obtained by placing the desired amount of tension upon thesprings 25 to allow the gear rin to slip upon the tapered portion of,the neo of the upper roll under any desired pressure. This adjustment isobtained by adjusting the nuts 23 upon the threaded portions of the pins21 to move the disk 22 toward .or from the tapered portion 17 thusproviding for compression or expansion of the springs 25 as desired andallowing the gear ring to slip upon the tapered portion of the neck ofthe upper roll at the proper time to prevent injury to the rolls andgearing.

The upper roll 5 is adjustable vertically with reference to the lowerroll 2 and the center of the upper roll is initially located in the samehorizontal plane with the center of the shaft 14.- of the the rollsbegin to wear the center of the upper roll 5 will be normally locatedbelow the C811t6I--0f the shaft 14: when the upper roll is located atthe lower limit of its movement as shown in Fig. 1 of the drawings. Whenthe roll 5 is raised to the upper limit of its movement the centerthereof will be above the center of the shaft 14:, the teeth 19 beingalways in mesh with the gear 16 in an adjusted position of the upperroll 5.

ith the construction of gearing illustrated and above described it willbe seen that there will be no danger of serious injury to the mill or tothe gearing in the event that a slab, plate or bar becomes jammedbetween the rolls as the frictionally mounted gear ring 18 will bepermitted to rotate upon the conical or tapered portion of the upperroll independently of the roll, in this event, preventing damage to themill or caring.

he gearing may be provided upon one end of the rolls or upon both endsas shown in F ig. 2, if desired, and other changes may be made whichcome within the scope of the invention.

I claim: 7

1. A roughing mill including a housing, a lower roll journaled therein,an upper roll adjustable in the housing toward and from the lower roll,a gear fixed upon one of said rolls, a second gear frictionally mountedupon the other roll, journal bearings fixed with relation to the housingand a train of gears journaled in said bearings and meshgear 16 butwhen' lower rolls.

2. A roughing mill including a housing, a lower roll journaled in saidhousing, an upper roll adjustable in said housing toward and from saidlower roll, a gear fixed upon the lower roll, journal bearings fixedwith relation to the housing, a pair of idler gears journaled in saidbear ngs and meshing with each other, one of said idler gears meshingwith the gear upon the lower roll and a gear frictionally mounted uponthe upper roll and meshlng with the other of said idler gears. V

3. A roughing mill including a housing, a lower roll journaledin saidhousing, an upper roll adjustable in said housing toward and from saidlower roll, a gear fixed upon the lower roll, journal bearmgs fixed uponthe housing, a pair of idler gears journaled in said bearings andmeshing with each other, one of said idler gears meshing with the gearupon the lower roll and a gear frictionally mounted upon 'the up er rolland meshing with the other of said idler gears.

4:. A roughing mill including a housing, a lower roll journaled in saidhousing, an upper roll adjustable in said housing toward and from saidlower roll, a gear fixed upon one of said rolls, a ear frictionallymounted upon the other rol journal bearings fixed with relation to thehousing and a pair of idler gears journaled in said journal bearings andmeshing with each other, one of said idler gears meshing with the gearupon the upper roll and the other idler gear meshing with the gear uponthe lower roll.

5. Aroughing mill including a housing, a lower roll journaled in saidhousing, an upper roll adjustable insaid housing toward and from thelower roll, a gear fixed upon the lower roll, a gear frictionallymounted upon the upper roll, a bracket fixed upon the housing and a pairof idler gears journaled in fixed hearings in said bracket and meshingwith each other, one of said idler gears meshing with the gear upon theupper roll and the other idler gear meshing with the gear upon the lowerroll. a

6. A roughing mill including a housing, a roll journaled in saidhousing, a second roll adjustable in the housing toward and from thefirst roll, a gear fixed upon .one of said rolls, a gear frictionallymounted upon the other roll, journal bearings fixed with relation to thehousing and a pair of idler gears journaled in said bearings and meshingwith each other, one of said idler gears meshing with the fixed ear andthe other idler gear meshing with t e frictionally mounted gear.

7 A rou hing mill including'a housing, a lower roll ournaled in saidhousing, an upper roll adjustable in the housing toward and from thelower roll, a conical neck upon the upper roll, a gear-ring mounted uponroll journaled in said housing, a-second roll said conical neck, meansfor holding the adjustable in the housing toward and from gear-ring infrictional engagement with said the first roll, a gear mounted upon eachroll, conical neck, a gear fixed upon the lower journal bearings fixedwith relation to the 15 5 roll, journal bearings fixed with relation tohousing and gears journaled in said bearthe housing and a pair of idlergears jourings and meshing with each other and with naled in saidbearings and meshing with the gears upon the rolls, one of said gearseach other, one of said idler gears meshing being frictionally mounted.with said gear-ring and the other idler gear In testimony that I claimthe above, I 20 10 meshing with the gear upon the lower roll. havehereunto subscribed my name. 8. A roughing mill including a housing, aHENRY A. ROEMER.

